The Artstor website will be retired on Aug 1st. Journal of the New York Entomological So... Journal of the New York Entomological Society Vol. 2, No. 1, Mar., 1894 The Larva and Pupa of Eucaterva ...

The life of a fruit fly consists of four phases: egg, larva, pupa and fully-formed fly. At 25 degrees, the fly embryo hatches one day after the egg is laid, and it then lives for five days as a larva.